We've talked about how to control your home PC from another computer, but if you want to control it from your phone, Screens is the way to go. It's incredibly user-friendly, secure, and makes great use of multitouch. Its only downside is its $20 price tag, but today through July 7th you can grab it for only $10 (and the Mac version is on sale, too). If you're still looking for a solid way to check on your home computer, this is the app you want. Check out our review of Screens in the App Directory for more info.